Crusher



IM 9 1931- R. c. NEWHOUSE 1,799,477

CRUSH-ER Filed Dec. 22, 1924 a speed sufliciently high to prevent atented Apr. 7, 1931 RAY C. NEWHOUSE, OF,

DELAWARE WAUWATOSA, WISCONSIN, ASSIGNOR MANUFACTURING COMPANY, OF MILWAUKEE, WISCONSIN,

ro ALLIS-GHALMERS A CORPORATION or CRUSHER Application filed December 22, 1924. Serial This invention relates in general to improvements in the art of disintegrating solid materials into fragments or small particles, and relates more specifically to improvements in the construction, mounting and method of operating crushers for reducing relatively llorllrd substances such as rock, ore, and the An object of the invention is to provide improved disintegrating 0r crushing apparatus and an improved method of operating crushers of certain types in order to enhance the efficiency thereof.

In the ordinary gyratory crusher, the material requiring reduction, is delivered into the upper end of an annular crushing chamber of gradually diminishing transverse cross-sectional area and is fed through the crushing zone by gravity when the fragments become sufliciently reduced by direct pressure from the relatively gyrating inner an outer crushing chambers to permit such feeding. The speed of relative gyration of the members is such that the gradually diminishing fragments of material are alternately brought to rest and pressed between the approaching crushing surfaces, and are subsequently released by the receding surfaces and allowed to drop by gravity to new lower resting positions preparatory to further reduction. The capacity of these machines is relatively limited by virtue of the enormous force required to effect crushing by direct pressure of material which has been wedged between the surfaces of the relatively moving crushing members, and also by virtue of the slow relative motionof the members.

The present invention contemplates provision of an improved mode of operating such crushers whereby the power consumption per unit quantity of material crushed, may be considerably reduced. In accordance with the present improvement the crushing members are relatively gyrated at absolute stoppage of the fragments of material as they advance by gravity through the crushzone. While the material is being coning tinuall advanced by gravity, the particles thereo are given a rapid succession of blows and are momentarily subjected to direct crushing pressure, thus fracturing the pieces and causing the fragments to fall rapidly through the crushing chamber. The present improvement plates provision of an improved mounting or support for crushing apparatus, whereby transmittal of vibration of any kind, from the crusher to the building or other support therefor, is positively eliminated, and whereby the crusherstructure is prevented from racking itself to pieces or loose from a fixed support. The improved mounting cooperates with the mode of operation and with the novel structure of the crusher itself, to produce an assemblage of elements having enormous capacity and high efiiciency.

Some of the novel features of crusher construction disclosed but not specifically also contemclaimed herein, form the subject-matter o copending application Serial No. 588,401, filed September 15, 1 922, of which the present application is a continuation in part.

The term crusher as employed herein, is intended to define any apparatus capable o disintegrating or breaking material into small particles or fragments, either by direct pressure, by impact, by grinding or otherwise.

A clear conception of an embodiment of the invention and of the novel method 0 operating crushers in accordance with the improvement, maybe had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or si 'lar parts in the various views.

' Fig. 1 is a central vertical section through an improved gyratory crusher showing a fragment of a yieldable cable support associated with the crusher.

Fig. 2 is a top view of the lower frame of the improved crusher illustrated in Fig. 1.

Fig. 3 is an enlarged fragmentary central vertical section through a yieldable spring support for a crusher.

The improved crusher comprises in general, an annular outer crushing member or concave 3 rigidly secured within an upper frame 4, and an inner frusto-conical crushing member or head 2 gyratable at high speed within the concave 3 and spaced therefrom to form a substantially annular crushing chamber 13 of gradually diminishing crosssectional area from its upper inlet 12 to its lower discharge 14. The concave 3 has the major portion of its crushing surface formed cylindrical about a vertical axis, and preferably has its lower extremity provided with an outwardly flaring crushing surface 27 as shown in Fig. 1. The head 2 is mounted upon a hollow suspension shaft 5 the upper end of which is supported and guided by a universal suspension bearing 18 and a guide hearing 19, both of these hearings being associated with the center of a heavy spider 10 which is rigidly attached to the upper end of the frame 4. The lower extremity of the head supporting shaft 5 is preferably located directly below the head 2 and is fitted within the bore of a rotary eccentric 6 the external cylindrical surface of which coacts with a sleeve 22 carried by a hub 23 secured to the lower frame 11 by means of radial ribs 34. A dust cap 26 embracing the shaft 5, coacts with an upper spherical surface of the sleeve 22.

The eccentric 6 is supported upon a thrust bearing 21 detachably secured to the lower portion of the hub 23 ofthe frame 11, the eccentric being rigidly attached to the lower extremity 20 of an upright drive shaft 7. The drive shaft 7 is spaced from and extends up ward through the interior of the hollow suspension shaft 5, being supported at its upper end by means of a guide bearing 33. The upper extremity of the shaft 7 is directly connected to the shaft of a prime mover or electric motor 9 by means of a flexible coupling 8. The motor 9 is supported above the concave 3 and the head 2 by means of the spider 10 and an intermediate support 35 which is mounted directly upon the spider.

The lower frame 11 is rigidly attached to the upper frame 4 by means of bolts, and provides a housing connecting the crusher discharge 14 with the final delivery spout 15. The frame 11 is preferably formed with a plurality of suspension lugs 17 and also has a. pluralit of sockets 29 formed therein. As illustrate in Fig. 1, the entire crusher is yieldably suspended by means of flexible cables 16 universally connected at their lower ends with the lugs 17 of the lower frame 11 and likewise universally connected at their upper ends with the timbers of the crushing lant in an obvious manner. As illustrated in Fig. 3, the crusher may be yieldably supy means of resilient elements or springs 28 coacting with the sockets 29 of the frame 11 and with similar sockets 31 rigidly attached to the foundation 32'. The springs 28 are of the helical compression type and loosely embrace vertical stub shafts or guide pins 30 ported directly upon a rigid foundation 32,

which may be secured either to the frame 11 or to the lower sockets 31.

The bearing surfaces of the driving eccentric 6 may be supplied with oil through a valve controlled oil supply pipe 24 and the excess may be conducted therefrom through an oil discharge pipe 25 as shown in Fig. 1. The other bearings of the crusher are also capable of being readily lubricated through suitable openings shown in the drawing.

During normal operation of the crusher the motor 9 is operating to rotate the eccentrio 6 at a high rate of speed. Rotation of the eccentric 6 causes the inner crushing memher or head 2 to gyrate rapidly within the outer crushing member or concave 3. The head 2 and shaft 5 are free to rotate about the axis of the shaft 5, during gyration of the elements, and in fact do rotate in a direction opposite to that of the eccentric 6, during crushing. As the material requiring reduction is admitted to the crushing chamber 18 through the inlet 12, the pieces of material are successively subjected to impact and direct crushing, by the rapidly gyrating head 2, this action breaking the pieces into smaller fragments. These smaller fragments are continually fed downwardly through the crushing zone or chamber 13 by gravity and are further. reduced as they proceed toward the outlet 14. The finally reduced material is eventually delivered from the annular discharge opening 14: through the lower frame 11 to the final discharge spout 15.

By yieldably supporting the crusher structure with cables 16 or springs 28, transmittal of vibration due to the rapidly gyrating head 2, to the stationary supporting structure, is positively avoided. The yielding suspension further permits the entire crushing structure to float and thereby prevents the clamping elements of the structure from becoming.

flexible coupling 8 serves to compensate forv non-alignment of the motor shaft with the operating shaft 7. While all of the parts of the crushing structure are protected against injury, they are readily accessible for inspection at all times. a

It should be understood that it is not desired to limit the invention to the exact details of construction andoperation herein shown and described, for various modificacrushing chamber tions within the scope of the claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a pair of crushing members cooperating to form a crushing chamber through which the material advances by gravity and one of said members supporting the other, means for relatively moving said members to crush and to permit advancement of the material, and a yieldable support for said supportingv member. 2. In combination, a pair of crushing members cooperating to provide an upright crushing chamber having a top inlet and a bottom discharge opening and one of said members supporting the other, means for relatively moving said members to crush material and to permit advancement thereof through said chamber, and a yieldable support for said supporting member.

3. In combination, a pair of crushing members cooperating to form a crushing chamber through which the material advances by gravity and one of said members supporting the other, means for relatively gyrating said members to crush and to permit advancement of the material, and a yield able support for said supporting member.

4. In combination, a pair of crushing members cooperating to provide an upright having a top inlet and a bottom discharge opening and one of said members supporting the other, means for relatively gyrating said members to crush material and to permit advancement thereof through said chamber, and a yieldable support for said supporting member.

5. In combination, a pair of crushing members cooperating to provide an upright crushing chamber having a top inlet and a bottom discharge opening and one of said members supporting the other, an eccentric for positively relatively gyrating said members to crush material and to permit advancement thereof through said crushing chamber, and a yieldable support for said supporting member.

6. In a crusher, an outer crushing member, an inner crushing member movably supported by said outer member, and a yieldable support for said outer member.

7 In a crusher, an outer crushing member, an inner crushing member movably supported by said outer member, means for gyrating said inner member relatively to said outer member, and a yieldable support for said outer member.

8. In a crusher, an outer crushing'memher, an inner crushing member movably suspended from above by said outer member, means coacting with the lower portion of said inner member for positively gyrating the same upon its suspension, and a yieldable su ort for said outer member.

9. In a crusher, an outer crushing member, an inner crushing member movably supported by said outer member, a prime mover for relatively moving said members to crush materials, and a yieldable support sustaining the weight of said prime mover and said members.

10. In a crusher, an outer crushing member, an inner crushing member movably supported by said outer member, a prime mover for moving said inner member supported by said outer member, and a yieldable, support for said outer member.

11.- In a crusher, relatively movable inner and outer crushing members, means for delivering material between said members by gravity, means for positively relatively moving said membersat a sufiiciently high rate of speed so that particles being reduced will be given a rapid succession of blows while being continually advanced by gravity between said members, and a yieldable support for one of said members.

12. In a crusher, relatively movable inner and outer crushing members between which material advances by gravity, means for positively relatively moving said members at a sufliciently high rate of speed to subject the particles of material to successive crushing impulses while being continually advanced by gravity between said members, and a yieldable support for one of said members.

13. In a crusher, relatively gyratable crushing members having surfaces between which material advances by gravity, means for relatively gyrating said members at a speed sufficiently high to subject the particles to a rapid succession of blows while being continually advanced by gravity through the crushing zone, and a yieldable support for one of said members.

14. In combination, members cooperating chamber through which the material advances by gravity, means for relat vely moving said members to crush material and to permit advancement thereof through said crushing chamber, a prime mover for rapidly operating said moving means, and a yieldable support sustaining the weight of said members, said moving means and said pr me mover.

15. In combination, a pair of crushing members cooperating to provide an upright crushing chamber having a top nlet and a bottom discharge opening, a prime mover for rapidly relatively moving said members to crush material and to enhance the passage of material through saiii chamber, and a yieldable support sustaining the weight of said members and said prime mover.

16. In combination, a pair of crushing members cooperating to provide an upright crushing chamber, a high speed motor for rapidly relatively moving said members to a pair of crushing to form a crushing crush material, and a yieldable support sustaining the weight of said members and said motor.

movable crusher member, the one of said 'members being supported by the other, and

cushion supports for the supporting member, whereby the vibrations of the crusher are cushioned.

19. In a crusher, the combination of a relatively fixed crusher member having a supporting frame, cushioned pedestals to support said frame and a gyratory crusher member supported by the relatively fixed member, whereby the vibrations of the crusher are cushioned.

20. In a crusher, ii'iner and outer coacting crushing members one'of said members sup porting the other, meanscoacting with one of said members for positively relatively gyrating said members at high speed, and a yieldable support carrying the weight of both of said members.

21. In a crusher, relatively movable inner and outer coacting crushing members one of said members supporting the other, means coacting with one of said members for positively gyrating said inner member relatively to said outer member, and a yieldable support for said outer member carrying the Weight of both of said members.

22. In a crusher, inner and outer crushing members one of said members supporting the other, means supported by one of said membersand coacting with the other of said members for relatively gyrating said members, a prime mover supported by one of said members for driving said means, and a yieldable support sustaining the weight of said members and said prime mover.

28. In a crusher, cooperating crushing members forming a crushing chamber through which material advances by gravity one of said members supporting the other, an eccentric supported by one of said members and coacting with the other of said members for relatively moving said members, and g laterally yieldable support for said memers.

24. In combination, relatively gyratable crushing members formed to progressively reduce material advancing by gravity therebetween, means for positively relatively gyratmg said members at such high speed that the material is given a rapid succession of blows while being continually advanced by gravity between said members, and means for eliminating the destructive efi'ect of the resultin vibration.

25. In com ination, relatively movable crushing members formed to progressively reduce material advancing by gravity therebetween, means for positively relatively moving said members toward each other to crush material and for retracting the same after each crushing blow at such high speed that the material is given a rapid succession of blows while being continually advanced by gravity betweensaid members, and means for eliminating the destructuve efiect of the resulting vibration.

In testimon whereof, the signature of the inventor is a Xed hereto. a

RAY C. NEWHUUSE. 

